Datongda Holdings, a leading semiconductor component distributor dedicated to the Asia-Pacific market, announced that its subsidiary has launched STMicroelectronics (ST) Discovery Kit ST25R3911B-DISCO integrated ST25R3911B NFC reader chip and STM32L476RE ultra low power micro The controller can shorten the development cycle of non-connected applications, achieve excellent communication distance, speed and energy efficiency, with simplified design and lower material cost.
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Its Discovery Kit board provides designers with an RF circuit layout reference design that uses the additional STM32 microcontroller software to quickly power up the board for use as an HF reader or NFC-initiated device.
Figure 1 - Photo of the ST NFC Reader Chip and Discovery Kit launched by Da Lian Da You
At the heart of the new STMicroelectronics Discovery Suite, the ST25R3911B NFC Reader Chip provides designers with product differentiation capabilities that simplify functional integration, streamline product manufacturing, and ensure a superior user experience. The power consumption optimization function of the reader chip is also excellent, including dynamic power output, which provides the minimum power required for the initiating device to communicate with the receiving device, thereby avoiding waste of power. This energy saving feature is important for portable devices and payment terminals. Advantage. Capacitor wake-up function can detect the presence of the card, sleep mode power consumption is less than 5μA, which helps to save the battery power of the device, for example, the hotel room card reader. The reader chip also supports inductor wake-up.
The RF receiver of the ST25R3911B is approximately five times more sensitive than a normal receiver, while the output power of up to 1.4W extends read and write distances without the need for additional amplifiers. Automatic Antenna Tuning (AAT) allows OEMs to efficiently fine tune the antenna settings of end devices online. In addition, the ST25R3911B is the only microcontroller on the market that can implement ultra-high bit rate (VHBR) communication single-chip solutions, increasing the download rate from 848kbit/s to 6.8Mbit/s. It is an e-government system such as passports and other applications. The best choice. It supports all major non-connected standards and RFID electronic label standards, including ISO 18092 (NFCIP-1) Active P2P, ISO14443A, ISO14443B, FeliCaTM and ISO 15693 non-contact standards for ticketing, asset tracking, device verification, Applications such as sensor data collection and access control.
Figure 2 - ST NFC reader chip and exploration kit system architecture diagram
The STM32L476RE ultra-low-power microcontroller is a companion chip on the Discovery Kit board. It is based on the 80MHz ARM® Cortex®-M4 core processor with built-in DSP extended instruction set and floating point unit. It provides many energy-saving features, such as the intelligent architecture built-in FlexPowerControl. The dynamic voltage regulation and seven power management modes as well as the sub-mode options make the energy saving effect very obvious. A built-in memory protection unit enhances application security. The Discovery Suite helps developers take advantage of the integration of microcontrollers and reader chips, as well as the powerful development ecosystem of STM32, including routines, IP blocks and expansion boards.
- STM32 microcontroller Chinese official website
- STM32 microcontroller official development tools
- STM32 microcontroller reference design
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